Gs soev t



3 matically by box 3l. The gas, thus prepared.

to the gas analyzer assembly 35, comprising an analyzer chamber 31 and a recorder 39. Electric power to operate assembly 35 is supplied by leads 4i, leading from a suitable power source (not shown). Analyser chamber 81 and recordel' 89 are operablyiannected by suitable leads through conduit 48. Recorder il has a window or opening ll, through which is visible a moving chart upon which stylus l1 marks the results of continuously 'made by 'the analyzer in chamber 31. Thereoordiun such. chart may appear like that shownin Fig. .3.=t example, as regards hydrogen analyses. .as n rule, the gas is also Mmmm. and these are also recorded in different paths upon the moving chart. Any .suitable :las .analyaer assembly (Il), capable o'f gases for hydrogen, may be used; these are available on the market and are not herein claimed per r suitable iorthemrent purpmes are in #ne hook "Industrial :In-

n `hy Donald P. lnkman VYJahn Wildyib Bons, Inc), Wedition, chapter 5,-at

and circuits, as shown within the broken-line boxAlinFig. 2. Thearefopehls through lea li. .il with perceptible Ilsnl means such aslightsandhomsillnshdwn inl'igs. 1.and2. The connection through lads Il. maybecontmllsdhyswimillmsrderred to inmore detail hereinafter.

The special at and circuits shmm within the broken-line/hox 43 will new heide- A .conventional recorder suitahlecrreoard- 1Ds the analysis orio as-mr.Hn.COa and CO has s switch advanaeshatt. Il. andnmlids `.who shaft. Theswitch advance shaitseb vom thestylus I1 (Figi) into its maaar positional record the content in theses 0131.269 and CQ. cachot which isrecordedJna-diii'srentrath on the chart. In atleet. ibemiths-siwlusmlotl three separate paths. noe .lor nach at the was substances analyzed for. shaft. turnsahout itssxis inaceordancewith-thedusntity of Ithe particularsubstanoe (Hz. OOaorcO) which is at the moment beinganalysed los'.

In operation, shaft 6i ywill turn about itsatis to move the stylus to .a position adiacent the path on the chart which is to henlottsd-Ior (my) hvdrosen: analyzer-.31 nsrtarsnstbs analysis or the sas ior hydrogen. mnd the rulthooimunicated through the leads inieanduit Il Fik- 1) actuates shaft. thereby@ Imate ihestrlus 47| to record at Just thevromrpmtnn tbechirh Shaft 8| then turns sumciently to more the mlustoapositlonadiacentthenextpathisas CO4); analysisproceedsandshaitlcauses the stylus to .record the analysis o! .that 88s. .Bimilarly. recording o! CO takes place. The cycle is then repeated. About `3 or 4 minutes is required per cycle. Kil this is "conventional .in a gas recorder or the type rem'redtolhovs.

In accordance with the present invention. the switch advance shaft 6I is provided with a nonconducting cam l5 the surface of which is concentric with shaft BI except at the hydrogen points, where ears 61 are provided. A microswitch sembly 68 is provided, havinganarm Bl pivoted at 1l by means including aispningito urge it against the circumference of cam 65, and a mmtact point I3 which arm 69 is caused to touch when cam 6i .turns to a position whereby either earfl f M *the larm 69. Contact is thus Mdereaohtimeitlil analyzer is analyzing and xocordingorhxd'maen. and contact is broken at ,all :what ltimes.

Slide whe "stadt I3 is provided with a nonconducting 4eccentric disc l5, which rotates as the shattimtst. Adiacent this disc is a switch arm'll Vpivoted at'll and provided with a rollei IBI whieh'is urged into contact with the periphen o! disc 1S by tension spring 83. Arm l1 is also prcvddedwith anontaotpcint lmhichumna intomtant mithanuther contact pointu sulla disciiunonessothatits shorter radius ensuit between shaft 63 and roller 8J. .Disc J5 'um pasitimld nnfxhattfthatitsshorterradiin will bemand adjacent loller-:ti whenitheihgmom It follows. thmeme,that zdntnctawill be lished between pointsiandl-wheneim-tll mains: amish mmm which cemmisesipoints Iliana il ywill hemmen hereinaiter switchen.

Hence, Aaaviinnussheing zal switch tmillhe simianhyclosing-.thelcncuit between el llad il isvhioh .il honnectad with cantera: It) .andehctrical Lisad -IS (which is connected with army 'through pivot means-lib. nine hvdmgsnanalysisssnonnal. switch V88 willnohclnsahut E the is hisitswitch vnilwldnmd a cimuitwillh esmhlishedi'hrnughliendsili, and. Nato thatifreadinsstormotthenthergaslnnalyzed for are high, switch 86 will close, .hutthere wlhenoaimnh stablisiudthroughleadsi, Slandlhansemtchlmillhe open).

:Bhme tawior mi seconds ane. roquimi .tot themndsrbmemebalmedfon the man nomi: tar the lim: point an itin COpnint,..fm-dhat.a imnerimitmmuhi accordingly :be minded to introduce .a vdem' intoths cimntntte'theabormentioneam contscmibyswitebesmdltanemade. Gush a time' .unitis mi hwnnmenil, and cmrinsa motor (notfshowrr) having amil coil 1, the mit of which motor, throtghany suitable .gaar-ing. more a .contact point )l through a Asuitable .moet distance, as the :hatt

rotates. until said point 8l timwhes another-nom ,pointll:whilecnutadtpointisconnscteclftoV vxmmmdieetmzthemnofa mwetwlnnehsttumam mman-.mr

memsinto wlch- 8 and n ne. adaptent he dusted by mebeuiecmuxtilmtmnidnrstmd seemdmtchmandthrohuiddelayedaction switch menu, when :.11 ot them are in ciosedposition.

5. mantas for indicating the presence oi' a. leakinciiatenrhxyreinehlutfumace.cum prhinzcundmtmelm torcontinuouslyrelmvinl amllqmntiwoftheexttproduced-hy slmtnmleedmingtheupeution thereof. means into which nid conduit means lead.:nadiwhicizrmreizoazmlynacontinuouslyizhexaidqznntttyotexttcasestorhydmgemeandimddmandcnrbmmonmdde. sezitmnmnladeptedtobelctutedintocied pmtinnmimnwsiameznswhentheiterisannbmmdmlnrhydromsecmd mmmmumuidnntxmhmml andndxxtaitninlctnatedmnldamttinh saidgummixmeamwhenreiaitertrwnm imi hydrolenmntotnldtueshimth a ed normal mel. delayed-acti. switch means :dem to b actmted imvnnl clepnsitinnupantheclnsinxntbnthsaidut sxvitchmeamandnidsecondmmhmmgsdd actuation of said delayed-action switch menu ccmtinning, whilenidntmdsecondmtch meambothconizinuetorexnnninsedforntieut a d period n! time. xmtil said timed-action switch is in clased 11ositiomamdwuningmecmldlrdldtoheectuated lby an electric aiment vinx thx-mmh slid rst and secondwitchmnmandthmuzh said delayaddemnn :mitch mean, Uhn uint than aninddaitinn.

mamma WALTERLMDBTGDMEBY.

Belennnestdhthebnfthllm msm Number Name Date 759,49 maman 'mty 10, 1904 1,167,911 Arendt at al. Bent. 11, 1923 1,801,791 Breisky et a1. mn'. 21, 1931 wzm Weber June 17, 1m 2535550 Pasa Dec. 2li. 1950 

